William m



(No Model.)

W. M. JOHNSTON.

PUMP.

'Patented Nv. 11, I1884.

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VILLIAM'M. JOHNSTON, OF VILMOT, OHIO.

PUMP.

SPECIFICATION forming part'of Letters Patent No. 307,954, dated November l1, 1884.

Application lcd February 16, 1884. (No model.)

To @ZZ whom, t may concern:

Be it known that I, WILLIAM M. JoHNs'roN, a citizen of the United States, residing` at Vilmot, in the county of Stark and State of Ohio, have invented certain new and useful Improvenients in Force-Pumps, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements in hand force-pumps which are convenient and portable,l and which can be used by children for the purpose of sprinkling and watering fiowers or vegetables, and also for Washing Windows, or for any other purpose Where it is necessary to force a small quantity of water from a central supply reservoir or Vessel, all of which improvements will be hereinafter more fully described, and pointed out'in the claims.

In the accompanying drawings,forming part of this specification, Figure l is a vertical section of the pump. Figs. 2, 3, and 4 are details of the construction of the valve and bottom of the pump-cylinder.

a is the pumpcylinder. a is the plunger, made for economy of a turned block of Wood, having a neck, '11, turned in it for the packing i', as shown in section, Fig. l. The rod `r/ is made to pass through the plunger, and is riveted to a washer, g', underneath. The upper part of rod g, at g, is swelled over another washer by a punch, which makes it tight upon washer g".

In thc bottom a" ofthe pu1np-oylinder ct are enough holes, as seen in Fig. 3, to permit the water to enter freely. On this bottom plate, a, is the flexible valve a, which is secured by a simple piece of wirefpassing over the top, as in Fig. 2, and each end passing through one of the holes in am., and then being bent underneath, as seen in Figs. 3 and 4.

b is a long air-condensing chamber opening into pump-cylinder a by the oriiice b.

Vithin the air-chamber b is secured the eduction-pipe c, which is turned and passes out of the shell of I), and may be continued up to its top, and at its extremity is secured a short piece of india-rubber tubing, c', (represented in bla-ck curved lines.) To this tubing can be fitted any description of nozzle, either for a single stream or a sprinkler.

On the inner shell of the air-chamber b is secured a standard, e, to which is pivoted the handle j'. To handle is pivoted, on one side of the standard 0, the pump-rod g, and on the other is attached a rod, d. Each of these rods has an accommodation-slot in handle j', if found necessary. Thetop of airchamber b has a cover, b, provided with a packing-box for the passage of the rod d, on the end of which rod d is a piston, d', in the air-chamber b, for the purpose of producing a pressure upon the air inA chamber b on every downstroke on that side as the pressure of the plunger a ceases on its upward movement. The handle f is double, so that in a large pump two persons can operate on the handle.

For small hand-pumps, Where the force of a single person or a child only is required, the cap b can be removed, and the rod d and piston d dispensed with, and a plain cap screwed on.

This pump is made of ordinarysheet-tin for the cylinder a, air-chamber b, and eductionpipe c, all soldered together. The rods g and (l are of round iron, and the standard c is made of sheet-tin, flanged so as to give sufficient strength to support the pressure of the handle, and is soldered to the air-chamber I). The handle is of Wood.

I claiml. The combination of the force-pump a, constructed as described, air-chamber b, supporting the handle f, eduction-pipe c. iiexible tube c, standard e, and nozzle c, substantially as and for the purpose described.

2. The combination of the/force-pump a, airchamber 1), standard e, supporting the handle f, eduction-pipe c, short fiexible tube c and nozzle c, the plunger or piston d', rod d, and handle j', substantially as and for the purpose described.

In testimony whereof I affix my signature in presence of two Witnesses.

VILLIAM DI. JOHNSTON. 

